CN106348510A - Thermal power plant desulfurization wastewater electrodialysis reconcentrator - Google Patents
Thermal power plant desulfurization wastewater electrodialysis reconcentrator Download PDFInfo
- Publication number
- CN106348510A CN106348510A CN201610732102.1A CN201610732102A CN106348510A CN 106348510 A CN106348510 A CN 106348510A CN 201610732102 A CN201610732102 A CN 201610732102A CN 106348510 A CN106348510 A CN 106348510A
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- electrodialysis
- outlet
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- plant
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to an industrial wastewater treatment technique and device, particularly a thermal power plant desulfurization wastewater electrodialysis reconcentrator. An inlet of a precipitation tank communicates with an outlet of an oxidation tank and an inlet of a multimedia filter; an outlet of the multimedia filter communicates with an inlet of a regulating tank; a first outlet of the regulating tank communicates with an inlet of the oxidation tank; a second outlet of the regulating tank communicates with an inlet of an electrodialysis plant; a cathode water outlet of the electrodialysis plant communicates with the inlet of the precipitation tank; an anode water outlet of the electrodialysis plant communicates with the inlet of the oxidation tank; an electrodialysis concentrated water outlet of the electrodialysis plant communicates with an inlet of an evaporative crystallizer; an electrodialysis fresh water outlet of the electrodialysis plant communicates with an inlet of an reverse osmosis unit; an outlet of a first dosing tank communicates with the inlet of the oxidation tank; and an outlet of a second dosing tank communicates with the inlet of the precipitation tank. The thermal power plant desulfurization wastewater electrodialysis reconcentrator has high electrodialysis weight concentration, reduces the subsequent evaporative crystallization load, and lowers the investment and operating cost.
Description
Technical field
The present invention relates to a kind of technique for treating industrial wastewater and device are and in particular to a kind of heat-engine plant desulfurized waste water electrodialysis
Reconcentration device.
Background technology
At present, the common desulfuration waste water treatment process of domestic and international thermal power plant is mainly: hydraulic(-ash) sluicing, is separately provided at chemistry
The methods such as reason system (predominantly three headers are processed), evaporation.Wherein evaporation process is so that desulfurization is given up by evaporation and crystallization apparatus
Water is separated into vapor and the solid waste of high-quality, in order to realize full factory waste water zero discharge.At evaporative crystallisation process
Reason desulfurization wastewater has the drawback that: investment is very high, and because whole desulfurization wastewaters are all evaporated, operating cost is very high.Therefore, need
Desulfurization wastewater is carried out with decrement treatment, reduces the processing cost of evaporation and crystallization system.
Technique for desulfurization wastewater decrement treatment mainly includes reverse osmosiss and nanofiltration etc..Due to desulfurization wastewater salinity
Higher, and it is rich in Organic substance and fouling tendency material, carry out concentrating decrement using reverse osmosiss, pretreating process requires strictly, and
It is low that the system response rate controls, and typically 50% about, and the salinity of strong brine increases to about 70000ppm, disposes such
Saline, for desalination industry, will face huge cost and challenge, leads to longer startup time and higher water
Cost.Desulfurization wastewater decrement treatment is carried out using nanofiltration, nanofiltration is bigger than normal to the clearance of monovalent ion, produce water and cannot directly return
With needing to can be only achieved reuse requirement to the nanofiltration product further desalination of water, technological process is partially long, and processing cost is higher.Therefore, need
Explore suitable desulfurization wastewater deweighting treating technology.
Content of the invention
In order to solve above-mentioned technical problem, the invention provides being applied to a kind of thermal power plant of heat-engine plant desulfurized wastewater treatment
Desulfurization wastewater electrodialysis reconcentration device, thus effectively removing the salinity in heat-engine plant desulfurized waste water and other compositions, but also
These compositions can be reclaimed with useful form.
In order to achieve the above object, the technical solution adopted in the present invention is, a kind of heat-engine plant desulfurized waste water electrodialysis are again
Enrichment facility, including oxidation pond, sedimentation tank, more medium filter, regulating reservoir, electrodialysis plant, reverse osmosis unit, evaporative crystallization
Device, the first dosing tank and the second dosing tank；
The entrance of described sedimentation tank is connected with the entrance of the outlet of oxidation pond and more medium filter, described more medium filter
Outlet be connected with the entrance of regulating reservoir, the first outlet of described regulating reservoir is connected with the entrance of oxidation pond, described regulation
The second outlet in pond is connected with the entrance of electrodialysis plant, the negative electrode pole water out of described electrodialysis plant and entering of sedimentation tank
Mouth is connected, and the anode pole water out of electrodialysis plant is connected with the entrance of oxidation pond, the electrodialysis concentrated water of electrodialysis plant
Outlet is connected with the entrance of evaporated crystallization device, the electrodialysis fresh water of electrodialysis plant export and reverse osmosis unit entrance phase
Connection, the described outlet of the first dosing tank is connected with the entrance of oxidation pond, the outlet of described second dosing tank and sedimentation tank
Entrance is connected.
Further, pipeline Guan Houyu electrodialysis are passed through in the concentrated water outlet of described reverse osmosis unit and the outlet of regulating reservoir
The entrance of device is connected.
Further, the first described dosing tank is built with sodium hypochlorite.
Further, the second described dosing tank is built with sodium hydroxide.
The present invention, by adopting technique scheme, compared with prior art, has the advantage that
Oxidation pond in the pretreatment unit that the present invention has plays protective action, prevents the non-oxygen of the inferior sulfate radical in desulfurization wastewater
Change completely.A large amount of calcium ions and magnesium ions are removed by sedimentation tank with precipitation form, alleviate follow-up individual event ion exchange while reducing ss
EDBM device workload and the probability reducing electrodialyzer fouling.
2nd, electrodialysis cycles of concentration of the present invention is high, alleviates the load of subsequent evaporation crystallization, reduces investment and runs into
This.
Brief description
Fig. 1 is the structural representation of embodiments of the invention.
Specific embodiment
In conjunction with the drawings and specific embodiments, the present invention is further described.
As a specific embodiment, as shown in figure 1, referring to Fig. 1, a kind of heat-engine plant desulfurized waste water electrodialysis are dense again
Compression apparatus, including oxidation pond 1, sedimentation tank 2, more medium filter 3, regulating reservoir 4, electrodialysis plant 7, reverse osmosis unit 8, evaporation
Crystallization apparatus 9, the first dosing tank 5 and the second dosing tank 6；
The entrance of described sedimentation tank 2 is connected with the entrance of the outlet of oxidation pond 1 and more medium filter 3, described multimedium mistake
The outlet of filter 3 is connected with the entrance of regulating reservoir 4, and the first outlet of described regulating reservoir 4 is connected with the entrance of oxidation pond 1,
The second outlet of described regulating reservoir 4 is connected with the entrance of electrodialysis plant 7, the negative electrode pole water out of described electrodialysis plant 7
It is connected with the entrance of sedimentation tank 2, the anode pole water out of electrodialysis plant 7 is connected with the entrance of oxidation pond 1, electrodialysis fill
Put 7 electrodialysis concentrated water outlet to be connected with the entrance of evaporated crystallization device 9, the outlet of the electrodialysis fresh water of electrodialysis plant 7 and
The entrance of reverse osmosis unit 8 is connected, and the outlet of described first dosing tank is connected with the entrance of oxidation pond 1, and described second adds
The outlet of medicine-chest is connected with the entrance of sedimentation tank 2.
Further, pipeline Guan Houyu electric osmose are passed through in the concentrated water outlet of described reverse osmosis unit 8 and the outlet of regulating reservoir 4
The entrance of analysis apparatus 7 is connected.
Further, the first described dosing tank is built with sodium hypochlorite.
Further, the second described dosing tank is built with sodium hydroxide.
Certain thermal power plant adopts desulfurization wastewater situation produced by Limestone-gypsum Wet Flue Gas Desulfurization Process: treating capacity 10t/d, sulphuric acid
Root 10000mg/l, inferior sulfate radical 6000mg/l, calcium ion content 1500mg/l, magnesium ion content 3000mg/l, chloride ion content
26000mg/l, sodium ions content 22000mg/l, ph are 5.9.
Desulfurization wastewater is through peroxidating and precipitation process: adds the sodium hypochlorite of 75mmol/l that desulfurization is given up toward in oxidation pond 1
Sulfite oxidation in water becomes sulfate, and the waste water after oxidation completely enters sedimentation tank 2；Add toward in sedimentation tank 2 again
Calcium ions and magnesium ions are precipitated by the sodium hydroxide of 162mmol/l, separate and obtain supernatant.
Clear liquid carries out multi-medium filtering and monovalention exchange membrane electrodialyzer successively, and more medium filter 3 is by particulate matter
Filter out the permeate obtaining that ss is less than 5, enter back into regulating reservoir 4 and be adjusted, water route one tunnel after regulation is back to oxidation pond
1, another road enters electrodialysis plant 7 and is adjusted deep or light water flow velocity is 4cm/s, and pole water flow velocity is 6cm/s, and tune film to voltage is
0.5v, is circulated concentration.Circulation 90min after obtain 15% about electrodialysis concentrated water, 3% about electrodialysis fresh water, ph value
The anode pole water for 2.3 for the negative electrode pole water and ph value for 9.5.Anode pole water is recycled to oxidation pond 1, and negative electrode pole water is recycled to precipitation
Pond 2, electrodialysis concentrated water enters vaporizer and is evaporated crystallizing, and electrodialyzer fresh water is recycled to reverse osmosis unit 8.
Although specifically show and describe the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
In vain, in the spirit and scope of the present invention being limited without departing from appended claims, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (4)
1. a kind of heat-engine plant desulfurized waste water electrodialysis reconcentration device it is characterised in that: include oxidation pond, sedimentation tank, multimedium
Filter, regulating reservoir, electrodialysis plant, reverse osmosis unit, evaporated crystallization device, the first dosing tank and the second dosing tank；Described
The entrance of sedimentation tank is connected with the entrance of the outlet of oxidation pond and more medium filter, the outlet of described more medium filter with
The entrance of regulating reservoir is connected, and the first outlet of described regulating reservoir is connected with the entrance of oxidation pond, and the second of described regulating reservoir
Outlet is connected with the entrance of electrodialysis plant, and the negative electrode pole water out of described electrodialysis plant is connected with the entrance of sedimentation tank
Logical, the anode pole water out of electrodialysis plant is connected with the entrance of oxidation pond, the electrodialysis concentrated water outlet of electrodialysis plant and
The entrance of evaporated crystallization device is connected, and the electrodialysis fresh water outlet of electrodialysis plant is connected with the entrance of reverse osmosis unit,
The described outlet of the first dosing tank is connected with the entrance of oxidation pond, the outlet of described second dosing tank and the entrance phase of sedimentation tank
Connection.
2. a kind of heat-engine plant desulfurized waste water electrodialysis reconcentration device according to claim 1 it is characterised in that: described anti-
By pipeline and the entrance of Guan Houyu electrodialysis plant is connected for the concentrated water outlet of permeability apparatus and the outlet of regulating reservoir.
3. a kind of heat-engine plant desulfurized waste water electrodialysis reconcentration device according to claim 2 it is characterised in that: described
First dosing tank is built with sodium hypochlorite.
4. a kind of heat-engine plant desulfurized waste water electrodialysis reconcentration device according to claim 1 it is characterised in that: described
Second dosing tank is built with sodium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732102.1A CN106348510A (en) | 2016-08-26 | 2016-08-26 | Thermal power plant desulfurization wastewater electrodialysis reconcentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732102.1A CN106348510A (en) | 2016-08-26 | 2016-08-26 | Thermal power plant desulfurization wastewater electrodialysis reconcentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106348510A true CN106348510A (en) | 2017-01-25 |
Family
ID=57854303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610732102.1A Withdrawn CN106348510A (en) | 2016-08-26 | 2016-08-26 | Thermal power plant desulfurization wastewater electrodialysis reconcentrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106348510A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2244109A1 (en) * | 1996-02-05 | 1997-08-14 | Veikko Jolkin | Method to treat whey |
| CN103288236A (en) * | 2013-05-27 | 2013-09-11 | 山东三维石化工程股份有限公司青岛分公司 | Treatment method for salt-containing wastewater |
| CN105859006A (en) * | 2016-05-23 | 2016-08-17 | 海博伦（苏州）环境科技股份有限公司 | Desulfurization waste water reuse and zero discharge system and technology |
-
2016
- 2016-08-26 CN CN201610732102.1A patent/CN106348510A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2244109A1 (en) * | 1996-02-05 | 1997-08-14 | Veikko Jolkin | Method to treat whey |
| CN103288236A (en) * | 2013-05-27 | 2013-09-11 | 山东三维石化工程股份有限公司青岛分公司 | Treatment method for salt-containing wastewater |
| CN105859006A (en) * | 2016-05-23 | 2016-08-17 | 海博伦（苏州）环境科技股份有限公司 | Desulfurization waste water reuse and zero discharge system and technology |
Non-Patent Citations (1)
| Title |
|---|
| 李月红: "《化工原理（第二版）》", 31 March 2016, 中国环境出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11502322B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11502323B1 (en) | 2022-05-09 | 2022-11-15 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11563229B1 (en) | 2022-05-09 | 2023-01-24 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US11611099B1 (en) | 2022-05-09 | 2023-03-21 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11699803B1 (en) | 2022-05-09 | 2023-07-11 | Rahul S Nana | Reverse electrodialysis cell with heat pump |
| US12107308B2 (en) | 2022-05-09 | 2024-10-01 | Rahul S Nana | Reverse electrodialysis cell and methods of use thereof |
| US11855324B1 (en) | 2022-11-15 | 2023-12-26 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell with heat pump |
| US12040517B2 (en) | 2022-11-15 | 2024-07-16 | Rahul S. Nana | Reverse electrodialysis or pressure-retarded osmosis cell and methods of use thereof |
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Application publication date: 20170125 |
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